Machines hang after rebooting

[GrigoriyMikhalkin]

I was trying to reboot machines instead of rebooting whole mini-lab for testing. First by running make delete-machine0x directive, after which machine goes to Planned Reboot state and then running make reboot-machine0x. After running last directive machines either hang in PXE Booting status(with 💀 appearing after some time) or staying in Planned Reboot state.

OS: Ubuntu 20.04
Vagrant : 2.2.9
Docker:

Server: Docker Engine - Community
 Engine:
  Version:          19.03.13
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.15
  Git commit:       4484c46d9d
  Built:            Wed Sep 16 17:01:20 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.3.9
  GitCommit:        ea765aba0d05254012b0b9e595e995c09186427f
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

[Gerrit91]

Also saw that sometimes a machine does not PXE boot properly and hangs. When you power off and on the VM it typically comes up healthy again. Probably needs some investigation within the pixiecore -> metal-core -> metal-api chain.

[majst01]

same experience here